When should I use macros in C++?

When should I use macros in C++?

Macros in C++ are useful for defining constants, creating inline functions, or conditionally compiling code. However, they can make debugging difficult and should be used judiciously.

What are the advantages of using macros over functions?

Macros can provide performance benefits since they are expanded at compile time, avoiding the overhead of function calls. They also allow for code that can be conditionally compiled.

Are there any downsides to using macros?

Yes, macros can lead to code that is harder to read and maintain. They can also cause unexpected behavior due to lack of type checking and scope.

Can you give an example of a macro?

Sure! A simple macro to define a constant could look like this: #define PI 3.14. This allows you to use PI throughout your code instead of the literal value.

When should I prefer inline functions instead of macros?

Inline functions provide type safety and better debugging support compared to macros. Use them when you need the benefits of function calls without the overhead.